System Calls Used - STREAMS Programming Guide

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	STREAMS Programming Guide Oracle Solaris 11.1 Information Library

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Document Information

Part I Application Programming Interface

1. Overview of STREAMS

2. STREAMS Application-Level Components

3. STREAMS Application-Level Mechanisms

4. Application Access to the STREAMS Driver and Module Interfaces

System Calls Used

Module and Driver ioctl Calls

General ioctl Processing

I_STR ioctl Processing

Transparent ioctl Processing

I_LIST ioctl

Other ioctl Commands

Message Direction

5. STREAMS Administration

6. Pipes and Queues

Part II Kernel Interface

7. STREAMS Framework - Kernel Level

8. STREAMS Kernel-Level Mechanisms

9. STREAMS Drivers

10. STREAMS Modules

11. Configuring STREAMS Drivers and Modules

12. Multithreaded STREAMS

13. STREAMS Multiplex Drivers

Part III Advanced Topics

14. Debugging STREAMS-based Applications

Part IV Appendixes

A. Message Types

B. Kernel Utility Interface Summary

C. STREAMS-Based Terminal Subsystem

System Calls Used

Table 4-1 summarizes the system calls commonly used in controlling and transferring data and messages within a stream.

Table 4-1 System Calls Used

System Call	Description
`read`(2)	Reads data from a stream
`write`(2)	Writes data to a stream
`ioctl`(2)	Controls a stream
`getmsg`(2)	Receives a message at the stream head
`getpmsg`(2)	Receives a priority message at the stream head
`putmsg`(2)	Sends a message downstream
`putpmsg`(2)	Sends a priority message downstream
`poll`(2)	Identifies files on which a user can send or receive messages, or on which certain events have occurred (historically, it was unnecessarily restricted to streams)
`pipe`(2)	Creates a bidirectional channel that provides a communication path between multiple processes

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